Cooling of the rod in rod rolling mills



Jan. 6, 1953 N. P. BEDsoN COOLING OF' THE ROD IN ROD ROLLING MILLS FiledDec. 25, 1948 Patented Jan. 6, 1,7953

"ED STAT ETS G 2,624,178 CGGIJING Gli" THE ROUIN RIOB. ROLLING MILLSSouthpnrt-,- Englandg. as'- signor to Blaw-K-nox Company, ,Bittsburgh;Ba:. Application December 23.I948',` Serial'No. 66,972" In GreatBritainJ'imez; 1948'v Noel Phillips' Eedson,

, i: This invention relates-to the coolingk ofthe rod in rodi rolling.,mills and has for its object `to providea simpleA and ecient coolerand'meansfor shedding'the-,water from the rod;

The invention. comprises; a cooler in which a swirlinglmixture' off airfand water is produced and caused'to'pass co-axiall'y througha tubesurrounding the-rod in a counter direction tothe movementV of.' the rod;andi a water shedder through whichv thecooled rodV passes, the'bore ofthe water shedder having a number of ridges which wipe the rod andintermediate gaps through' WhichY the Water collected at the ridgesdrainsfaway.

Thev invention further comprises al mixing chamber having; an outer4conical' or tapering casing- 'Xed atf'itssmaller end to the tube, aninner nozzle, through which the rod travels, se cured to the mixingchamber, the bore of the nozzle divergingv towards the tube, the nozzlebeing mounted coaxially within the outer casing and providing an annularchamber between the nozzle andthecasing which has an outlet spacebetween the end of the nozzleand the inner surface of the casingatitssmaller end, and a tangential water inlet at the larger end of thecasing through which water under pressure flows into-theannular chamberto produce a swirling stream of 'water drawingin air through the-innernozzle-.'-

The invention further comprises a water shedd'er having-"a number ofsimilar parts, each part having a central tapering bore,v longitudinalbolts which secure-the'partstogether on a common axis,there'beingfgapsbetween the central'jbores of the several parts throughwhich water may es- (iv Claims. (Ch 624-1) cape and drain away, guidetubes for each rod Y as it passes through the several parts and means tosupport the guide tubes.

Referring to the accompanying explanatory drawings:

Figure 1 is a sectional elevation of a cooler and water shedderconstructed in accordance with the invention.

Figure 2 is a sectional line 2-2 of Figure 1.;

Figure 3 is a sectional end elevation on the line 3-3 of Figure 1.

The rod c issuing hot fromy a roling mill is passed successively througha cooler A and a water shedder B. The cooler comprises a tube d throughwhich the rod passes in counter direction to a stream of water and air,produced. in a chamber secured to the tube. The chamber comprises anouter casing e which tapers towards the end and elevation on theinto-which theftube'd isssecured', suchz-casin'ghaving atangental'v`waterinletbranch ati so that the` water issuingC into t the" casingunder pressure, which may be of 'the order of180`lbs. per square inch;travelswithv a-VA strongv swirling motionrv to the--small'diameter endofthe'baSing. Coaxially within the-latter" isfa nozzle f through whichftherod'ipasses; the nozzle diverging towards theen'd wheretlfiefrodlenters.` Av gap is-left-at" g-between the conical end ofth'e'nozzle andi theinterior of the casing so that'theswirling stream ofwater can issue therethrough` and surroundtheincoming rod. A renewabletubeivh is provided in the outer `endofl thefnozzlef. The nozzleiffscrews into the endof the-casingieand'is heldinwplaceby thelock-nut-a;

When the dev-iceV is in operation, air. tends to flow-into andA throughthenozzle fidue' tothe ejector action: of the swirling waterv stream`issuing around! the end of" the nozzle, with the result that'afswirlingv stream` of aeratedv water travels alongi the tuberi; aroundthe ro'dpassing therethrough.

From.. the cooler: the rodl'c passes. to. the -water shedder B,whichcomprisesaseries' of.: parts Ic mounted. om a1. common axis;- eachpart having a tapern'gfboreim, .withlgaps nbetween, the taperingi bores,through. which `water-may escapes and drain away; The;partslcaare.yheld. together by longitudinal boltsvo whichalszrv secure theA guidetubes p andqby'whichftlie water shedderisasupported in suitable stands;Yt.,

Therad @passes through :the'converging mouth 1'- of the. guide.. tube`pr and. through the? central bore ofitheawater; shedder. where; due; tovitszvibratingmovement, itthrows .ont tliegwater. adhering thereto, suchwater being wiped off by contact of the rod with the nozzle parts m anddraining through the gaps n. A renewable bush is provided at s which isthe main support for the rod in its travel through the shedder. Theplatform u serves to collect and drain away the water from the coolerand shedder.

Owing to the swirling of the water stream, the drag on the moving rod iseliminated or greatly reduced.

What I claim is:

1. Apparatus for treating hot rolled metal rods and the like duringaxial movement thereof, comprising a guide tube which may be contactedby said rods respectively, a nozzle spaced from the entering end of theguide tube, the nozzle having an outlet so positioned that fluid issuingtherefrom is directed into the guide tube and toward the entering endthereof, a uid supply ning, said conduit for the nozzle, and a fluidintercepting means generally surrounding the path of rods following theguide tube, the intercepting means comprising a series of rigid blocks,each block having a central part in spaced relation to the central partsof the other blocks, and each central part having an axial openingtherethrough for the passage of the rods, the blocks being adapted toWipe said rods in the course of their axial movement therethrough.

2. Apparatus for treating hot rolled metal rods or the like during axialmovement thereof or the like, comprising a guide tube having an enteringand a leaving end through which said rods pass, a swirling nozzle fxedlyconnected to said guide tube and generally pointing toward the enteringend thereof, and a plurality of longitudinally placed rigid watershedding parts each having a middle portion with a central bore thereincoaxial with the axis of said guide tube and through which bore saidrods pass, said central bores being of a diameter approximating theamplitude of the lateral movement of said rods while runmiddle portionsbeing in spaced relation to each other of such middle portions, thespaces between said portions serving as intermediate draining gaps,whereby said rods may be cooled by cooling uid from said nozzle andresidual cooling liquid removed therefrom by wiping contact with saidparts during the passage of said rods through said central bores.

3. Apparatus for treating hot rolled metal rods or the like during axialmovement thereof, comprising a tube through which said rods move, anozzle connected to said tube at a distance from the entering endthereof and having access to the interior of said tube, said nozzlefurther being coaxial with the axis of said tube, an outer Icasingforming a part of said nozzle and having an interior wall convergingtoward said entering end of said tube, an inner nozzle forming a part ofsaid nozzle and having an end toward said entering end of said tubeconverging toward the axis of said tube, said inner wall of said outercasing and said converging end ofA said inner nozzle dening an annulargap, means dening a central bore through said inner nozzle coaxial withthe axis of said tube, said bore diverging in the direction of saidtube, rigid Water shedding blocks in longitudinal alignment adjacent therod-leaving end of said nozzle, said blocks each having central taperingbores therethrough coaxial with the axis of said central bores and saidinner nozzle and diverging toward said nozzle, said rods passing throughsaid bores, said central tapering bores having a minimum diameter`approximating the amplitude of the lateral movement of said rods whilepassing therethrough, said blocks further defining gaps substantiallybetween said central bores therein, whereby said rods are cooled to apredetermined degree with reduced drag and the cooling fluid removedtherefrom by wiping contact with said blocks during the passage of saidrods through the tube, nozzle and water shedding sections of saidapparatus.

4. In the cooling and drying of hot rolled rods or the like during axialmovement thereof, the steps comprising, passing a cooling liquid aroundsaid rods in a helical manner in contact therewith, removing a portionof said cooling liquid by constricting the passage through which saidrods travel, jarring said rods, and wiping o the remainder of saidliquid from said rods in the course of their continued passage.

5. In the cooling and drying of hot rolled metal rods or the like duringaxial movement thereof, the steps comprising, passing a cooling fluidaround said rods in a swirling manner in contact therewith, removing atleast a portion of said cooling fluid by constricting the passagethrough which said rods traveLand then jarring and wiping said rods inthe course of their continued passage to remove a substantial portion ofthe remainder of said cooling fluid.

6. In the cooling and drying of hot rolled metal rods or the like duringaxial movement thereof, the steps comprising, passing a cooling liquidaround said rods in a swirling generally countercurrent manner incontact therewith, removing at least a portion of said cooling liquid byconstricting the passage through which said rods travel, and jarring andwiping said rods in the course of their continued passage tosubstantially remove the remainder of said cooling liquid.

NOEL PHILLIPS BEDSON.

REFERENCES CITED The following references are of record in the Ai-lle ofthis patent:

UNITED STATES PATENTS Reel Apr. 23, 1946

